Highlights for guaifenesin
guaifenesin Side Effects
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
- stomach upset
guaifenesin May Interact with Other Medications
Interactions are not expected.
How to Use guaifenesin
Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. Do not break, chew or crush this medicine. You may take with food or on an empty stomach. Take your medicine at regular intervals. Do not take your medicine more often than directed.
Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 12 years old for selected conditions, precautions do apply.
They need to know if you have any of these conditions:
- kidney disease
- an unusual or allergic reaction to guaifenesin, other medicines, foods, dyes, or preservatives
- pregnant or trying to get pregnant
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
Do not treat a cough for more than 1 week without consulting your doctor or health care professional. If you also have a high fever, skin rash, continuing headache, or sore throat, see your doctor.
For best results, drink 6 to 8 glasses water daily while you are taking this medicine.
Keep out of the reach of children.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Keep container tightly closed. Throw away any unused medicine after the expiration date.
Last Updated: January 29, 2009